Karsten Hilbert wrote: > Thanks to all for the suggestions. > > For the time being I will stay with using NULL. > > I will also stay with the hope that one day before long we > will have "'infinite'::interval". We have this TODO: o Allow infinite dates just like infinite timestamps Do we need to add intervals to this? -- Bruce Momjian http://candle.pha.pa.us SRA OSS, Inc. http://www.sraoss.com + If your life is a hard drive, Christ can be your backup. +